20012646400

素因数分解:

$2^{14}\times 5^2\times {\mathrm{48859}}^1$

素因数の和:48897

約数の個数: 90

約数和(自身を含む): 49630864220

約数和(自身を除く): 29618217820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1024, 1280, 1600, 2048, 2560, 3200, 4096, 5120, 6400, 8192, 10240, 12800, 16384, 20480, 25600, 40960, 48859, 51200, 81920, 97718, 102400, 195436, 204800, 244295, 390872, 409600, 488590, 781744, 977180, 1221475, 1563488, 1954360, 2442950, 3126976, 3908720, 4885900, 6253952, 7817440, 9771800, 12507904, 15634880, 19543600, 25015808, 31269760, 39087200, 50031616, 62539520, 78174400, 100063232, 125079040, 156348800, 200126464, 250158080, 312697600, 400252928, 500316160, 625395200, 800505856, 1000632320, 1250790400, 2001264640, 2501580800, 4002529280, 5003161600, 10006323200, 20012646400]

約数ペア:

[(1, 20012646400), (2, 10006323200), (4, 5003161600), (5, 4002529280), (8, 2501580800), (10, 2001264640), (16, 1250790400), (20, 1000632320), (25, 800505856), (32, 625395200), (40, 500316160), (50, 400252928), (64, 312697600), (80, 250158080), (100, 200126464), (128, 156348800), (160, 125079040), (200, 100063232), (256, 78174400), (320, 62539520), (400, 50031616), (512, 39087200), (640, 31269760), (800, 25015808), (1024, 19543600), (1280, 15634880), (1600, 12507904), (2048, 9771800), (2560, 7817440), (3200, 6253952), (4096, 4885900), (5120, 3908720), (6400, 3126976), (8192, 2442950), (10240, 1954360), (12800, 1563488), (16384, 1221475), (20480, 977180), (25600, 781744), (40960, 488590), (48859, 409600), (51200, 390872), (81920, 244295), (97718, 204800), (102400, 195436)]